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Operation
312766N 13
Operation
Pressure Relief Procedure
1. Shut off the air to the pump.
2. Close the bleed-type master air valve (AD).
3. Hold a metal part of the dispense valve
firmly to a grounded metal pail. Trigger the
valve to relieve pressure.
4. Open all fluid drain valves in the system,
having a waste container ready to catch
drainage. Leave drain valve(s) open until
you are ready to dispense again.
5. If you suspect the nozzle or hose is
clogged or that pressure has not been fully
relieved after following the steps above,
VERY SLOWLY loosen the hose end cou-
pling to relieve pressure gradually, then
loosen completely. Clear hose or nozzle
obstruction.
Flush Pump Before Use
The pump is tested with lightweight oil, which
is left in to protect the pump parts. To prevent
contamination of the fluid you are pumping,
flush the pump with a compatible solvent
before using it. See Flushing, page 13.
Flushing
1. Follow Pressure Relief Procedure, page
13.
2. Place suction tube in grounded metal drum
containing cleaning fluid.
3. Set pump to lowest possible fluid pressure,
and start pump.
4. Hold a metal part of the dispense valve
firmly to a grounded metal pail. Trigger the
dispense valve until clean solvent dis-
penses.
5. Remove valve from hose.
6. Follow Pressure Relief Procedure, and
remove fluid filter and soak in solvent.
Replace filter cap.
7. Cycle the pump slowly for at least 5 min-
utes, then stop and disconnect the air hose.
8. Push up on the ball (5) of the intake valve
(29) to drain the lower part of the pump.
9. Turn the pump over to drain the upper part
of the pump.
Trapped air can cause the pump to cycle
unexpectedly, which could result in serious
injury from splashing or moving parts.
• Flush at the lowest pressure possi-
ble. Check connectors for leaks and
tighten as necessary.
• Flush with a fluid that is compatible
with the fluid being dispensed and
the equipment wetted parts.
Trapped air can cause the pump to cycle
unexpectedly, which could result in serious
injury from splashing or moving parts.